Hi there,

Homease definitelly supply cubes. £9.99 for a bos of 13 grids. cubes are also sold online at: www.monarchdirect.co.uk/a...lving.html although they are more expensive.
I found it harder to find coroplast but in the UK it is called correx and if you look for sign makers in yellow ppages and ring around you will find some. (about £20 a sheet).
Persevere it will be worth it!

Laure